/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.sdk.util.common;



import java.util.Iterator;

import java.util.Observable;



/**

 * An abstract class used for iterators that notify observers about size in bytes of their elements,

 * as they are being iterated over. The subclasses need to implement the standard Iterator interface

 * and call method notifyValueReturned() for each element read and/or iterated over.

 *

 * @param <V> value type

 */

public abstract class ElementByteSizeObservableIterator<V> extends Observable

    implements Iterator<V> {

  protected final void notifyValueReturned(long byteSize) {

    setChanged();

    notifyObservers(byteSize);

  }

}